Ensayo A-BRAVE: ensayo aleatorizado de fase 3 con anti-PD-L1 avelumab en pacientes con cáncer de mama temprano triple negativo de alto riesgo
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Updated: Sep 9, 2025

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Resumen
El adyuvante avelumab no mejoró la supervivencia libre de enfermedad en el cáncer de mama triple negativo temprano de alto riesgo (TNBC). Sin embargo, avelumab mostró un beneficio potencial en la supervivencia general en este grupo de pacientes.
Área de la Ciencia:
- En el campo de la oncología
- La inmunoterapia
- Investigación del cáncer de mama
Sus antecedentes:
- El ensayo A-BRAVE investigó el avelumab, un anticuerpo anti-PD-L1, para el cáncer de mama triple negativo temprano (TNBC) con alto riesgo de recurrencia.
- TNBC es un subtipo agresivo de cáncer de mama con opciones de tratamiento limitadas.
Objetivo del estudio:
- Evaluar la eficacia del adyuvante avelumab en comparación con la observación en pacientes con cáncer de tejido neonatal precoz de alto riesgo.
- Evaluar la supervivencia libre de enfermedad (DFS) y la supervivencia global (OS) como parámetros primarios y secundarios.
Principales métodos:
- En un ensayo aleatorizado de fase III (A- BRAVE) se asignó a pacientes con cáncer de trombocitoma temprano de alto riesgo a un año de tratamiento con avelumab o de observación posterior al estándar.
- Los criterios de alto riesgo incluían estadificación patológica específica o enfermedad residual después de la quimioterapia neoadyuvante.
- DFS y OS fueron analizados en la intención de tratar (ITT) y en estratos específicos de pacientes.
Principales resultados:
- Avelumab no mejoró significativamente la DFS en la población ITT (HR 0,81, p=0,172) o en el estrato B (HR 0,80, p=0,170).
- El análisis descriptivo indicó una posible reducción de los eventos de OS con avelumab (HR 0,66).
- El estado de PD-L1 fue pronóstico pero no predictivo del beneficio de DFS de avelumab.
Conclusiones:
- Un año de tratamiento adyuvante con avelumab no mejoró la DFS en pacientes con cáncer de tejido neonatal precoz de alto riesgo que completaron el tratamiento estándar.
- Se observó un impacto potencialmente favorable en la supervivencia general, lo que justifica una mayor investigación.
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